CN218939463U

CN218939463U - Micro-switch

Info

Publication number: CN218939463U
Application number: CN202222834099.8U
Authority: CN
Inventors: 何腾锋
Original assignee: Guangdong Grans Electric Apparatus Manufacturing Co ltd; Guangdong Galanz Enterprises Co Ltd
Current assignee: Guangdong Grans Electric Apparatus Manufacturing Co ltd; Guangdong Galanz Enterprises Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-28
Anticipated expiration: 2032-10-26

Abstract

The utility model relates to a micro switch, which comprises a push switch, a fixed contact, a movable contact arranged on a connecting sheet, a movable contact leading-out terminal, a rotary copper sheet and a spring piece, wherein one end of the spring piece is connected with the movable contact leading-out terminal in a matching way, the other end of the spring piece is connected with the connecting sheet in a matching way, one end of the rotary copper sheet is connected with the movable contact leading-out terminal in a matching way, the other end of the rotary copper sheet is connected with the connecting sheet in a matching way, and one end of the push switch acts on the connecting sheet to enable the push switch, the connecting sheet, the rotary copper sheet, the spring piece and the movable contact leading-out terminal to form a transmission mechanism for separating or contacting the movable contact and the fixed contact. Through the cooperation of stationary contact leading-out terminal, connection piece, spring leaf and rotation copper sheet, realize moving, controllable contact and the breaking of stationary contact, owing to contact and breaking all are instantaneous action, can effectively reduce the arcing and strike sparks phenomenon between the contact, improve micro-gap switch's life, micro-gap switch simple structure reduces manufacturing cost, improves the competitiveness of product.

Description

Micro-switch

Technical Field

The utility model relates to the technical field of electrical components, in particular to a micro switch.

Background

The micro switch is characterized in that the transmission block button controls the action of the internal sheet metal part to enable the internal contact to be closed or opened, and the normally used micro switch is normally open, normally closed and normally open, and can play a role in controlling circuit switching in a circuit. The micro-switch has the characteristics of stability, reliability, sensitive operation, large bearable load and long service life.

A micro-switch as disclosed in chinese patent No. CN114899025 a. The static contact and the movable contact of the micro switch are not provided with heat dissipation layers. The heat dissipation effect of the fixed contact and the movable contact is not ideal. Thus, there is a need for further improvement.

Disclosure of Invention

The utility model aims to provide a micro-switch, which realizes the controllable contact and breaking of a movable contact and a static contact through the matching of a static contact leading-out terminal, a connecting sheet, a spring piece and a rotating copper sheet, and can effectively reduce the arcing and sparking phenomena between the contacts and improve the service life of the micro-switch due to the instantaneous actions of the contact and breaking, and has the advantages of simple structure, effective reduction of production cost and improvement of the competitiveness of products.

The micro switch comprises a push switch, a fixed contact, a movable contact arranged on a connecting sheet, a movable contact leading-out terminal, a rotary copper sheet and a spring piece, wherein one end of the spring piece is connected with the movable contact leading-out terminal in a matched manner, the other end of the spring piece is connected with the connecting sheet in a matched manner, one end of the rotary copper sheet is connected with the movable contact leading-out terminal in a matched manner, the other end of the rotary copper sheet is connected with the connecting sheet in a matched manner, and one end of the push switch acts on the connecting sheet to enable the push switch, the connecting sheet, the rotary copper sheet, the spring piece and the movable contact leading-out terminal to form a transmission mechanism for separating or contacting the movable contact and the fixed contact.

The end face of the stationary contact and/or the movable contact is provided with a metal layer, which plays a role in helping heat dissipation.

The metal layer is a silver alloy layer.

The thickness of the metal layer is 0.3 mm-0.35 mm.

The movable contact leading-out terminal is provided with a jack, and a bolt at one end of the rotary copper sheet is inserted into the jack.

The connecting piece is provided with a slot, the other end of the rotary copper sheet is provided with a clamping slot, and the clamping slot is clamped on the slot.

Slots are formed in the connecting piece and the movable contact leading-out terminal, a bolt at one end of the spring piece is inserted into the slot of the connecting piece, and a bolt at the other end of the spring piece is inserted into the slot of the movable contact leading-out terminal. The spring piece is in a bending shape.

The micro switch further comprises a shell, wherein a mounting position for mounting the push switch is arranged on the shell, the static contact is arranged on the static contact leading-out terminal, a first assembly limit groove and a first fixing hole are formed in the shell, one end of the static contact leading-out terminal is inserted into the first fixing hole, the static contact leading-out terminal is partially limited in the first assembly limit groove, the other end of the static contact leading-out terminal extends out of the shell along the first assembly limit groove, the static contact leading-out terminal is fixed in a two-point fixing mode, and the static contact leading-out terminal is prevented from moving up and down or left and right in the shell.

In addition, a silver layer which is covered on the surface of the movable contact leading-out terminal and/or the static contact leading-out terminal and/or the connecting sheet and/or the rotating copper sheet is arranged on the movable contact leading-out terminal and/or the static contact leading-out terminal and/or the connecting sheet, and the thickness of the silver layer is 0.6-1 mu m, so that the movable contact leading-out terminal and/or the static contact leading-out terminal and/or the connecting sheet plays a role in helping heat dissipation.

The shell is also provided with a second assembly limit groove and a second fixing hole, one end of the movable contact lead-out terminal is inserted into the second fixing hole, the movable contact lead-out terminal is partially limited on the second assembly limit groove, the other end of the movable contact lead-out terminal extends out of the shell along the second assembly limit groove, and the movable contact lead-out terminal is fixed in a two-point fixing mode to prevent the movable contact lead-out terminal from moving up and down or left and right in the shell.

The micro switch is a normally open micro switch, a normally closed micro switch or a normally open micro switch.

The beneficial technical effects of the utility model are as follows:

through the cooperation of stationary contact leading-out terminal, connection piece, spring leaf and rotation copper sheet, realize moving, controllable contact and the breaking of stationary contact, owing to contact and breaking all are instantaneous action, can effectively reduce the arcing and strike sparks phenomenon between the contact, improve micro-gap switch's life, and micro-gap switch's simple structure effectively reduces manufacturing cost, improves the competitiveness of product.

Drawings

Fig. 1 is a schematic perspective view of a normally open micro switch according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of an internal structure of a normally open micro switch according to an embodiment of the present utility model.

Fig. 3 is a schematic view illustrating an internal structure of a housing according to an embodiment of the utility model.

Fig. 4 is a schematic diagram of a structure of a connection piece, a rotary copper sheet, a spring piece and a movable contact lead-out terminal in a transmission manner according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram illustrating an internal structure of a normally open micro switch according to an embodiment of the present utility model.

FIG. 6 is a schematic view illustrating an internal structure of a normally-closed micro switch according to an embodiment of the present utility model

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Referring to fig. 1-4, a micro switch comprises a push switch 10, a stationary contact, a movable contact 5 arranged on a connecting sheet 9, a movable contact leading-out terminal 6, a rotary copper sheet 7 and a spring piece 8, wherein one end of the spring piece 8 is connected with the movable contact leading-out terminal 6 in a matched manner, the other end of the spring piece 8 is connected with the connecting sheet 9 in a matched manner, one end of the rotary copper sheet 7 is connected with the movable contact leading-out terminal 6 in a matched manner, the other end of the rotary copper sheet 7 is connected with the connecting sheet 9 in a matched manner, and one end of the push switch 10 acts on the connecting sheet 9 to enable the push switch 10, the connecting sheet 9, the rotary copper sheet 7, the spring piece 8 and the movable contact leading-out terminal 6 to form a transmission mechanism for separating or contacting the movable contact 5 and the stationary contact.

The end face of the stationary contact and/or the movable contact 5 is provided with a metal layer.

The metal layer is a silver alloy layer.

The thickness of the metal layer is 0.3 mm-0.35 mm.

The movable contact leading-out terminal 6 is provided with an inserting hole 6.1, and a bolt at one end of the rotary copper sheet 7 is inserted into the inserting hole 6.1.

The connecting piece 9 is provided with a slot 9.1, the other end of the rotary copper sheet 7 is provided with a clamping slot 7.1, and the clamping slot 7.1 is clamped on the slot 9.1.

The connecting piece 9 and the movable contact leading-out terminal 6 are respectively provided with a slot, a bolt at one end of the spring piece 8 is inserted into the slot of the connecting piece 9, and a bolt at the other end of the spring piece 8 is inserted into the slot of the movable contact leading-out terminal 6.

The micro switch further comprises a shell 11, wherein a mounting position 12 for mounting the push switch 10 is arranged on the shell 11, a static contact is arranged on a static contact leading-out terminal, a first assembly limit groove 14 and a first fixing hole 13 are arranged on the shell 11, one end of the static contact leading-out terminal is inserted into the first fixing hole 13, a part of the static contact leading-out terminal is limited in the first assembly limit groove 14, and the other end of the static contact leading-out terminal extends out of the shell 11 along the first assembly limit groove 14; in addition, the movable contact leading-out terminal 6 and/or the stationary contact leading-out terminal and/or the connecting sheet 9 and/or the rotary copper sheet 7 are provided with a silver layer covering the surface thereof, and the thickness of the silver layer is 0.6-1 μm.

The shell 11 is also provided with a second assembly limit groove 15 and a second fixing hole 16, one end of the movable contact lead-out terminal 6 is inserted into the second fixing hole 16, the movable contact lead-out terminal 6 is partially limited on the second assembly limit groove 15, and the other end of the movable contact lead-out terminal 6 extends out of the shell 11 along the second assembly limit groove 15.

Referring to fig. 1 and 2, in this embodiment, the micro switch is a normally open micro switch, the spring piece 8 is in a slightly compressed state after being assembled, when the push switch 10 is pushed upwards, the rotary copper piece 7 is rotated upwards, at this time, the spring piece 8 is forced to be compressed, when the spring piece 8 is compressed to a certain critical point, the connecting piece 9 is made to move downwards instantaneously, at this time, the movable contact 5 moves upwards to contact with the first stationary contact 3 and is separated from the second stationary contact 4, and at this time, the distance of the downward movement of the push switch 10 is called the stroke. When the push switch 10 is not stressed, the spring piece 8 is restored to the original state, and when the spring piece is restored to a certain critical point, the connecting piece 9 can be enabled to move downwards instantly, the movable contact 5 is separated from the first fixed contact 3 instantly, the movable contact 5 is contacted with the second fixed contact 4, and at the moment, the distance of the upward restoring action of the push switch 10 is called as a differential distance. If the push switch 10 is not subjected to external force, it will return to the original unstressed position.

Referring to fig. 5, in this embodiment, the micro switch is a normally open micro switch, only the first stationary contact lead-out terminal 1 is provided with a first stationary contact 3 on one side, the movable contact 5 is in contact with the first stationary contact 3, and the movable contact 5 is disconnected from the first stationary contact 3 in a pending state.

Referring to fig. 6, in this embodiment, the micro switch is a normally closed micro switch, only the second stationary contact leading-out terminal 2 is provided, and one side thereof is provided with the second stationary contact 4, and the movable contact 5 contacts with the second stationary contact 4 in the undetermined state.

The foregoing is a preferred embodiment of the utility model showing and describing the general principles, features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing description merely illustrates the principles of the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a micro-gap switch, includes push switch (10), stationary contact, sets up moving contact (5) on connection piece (9), moving contact extraction terminal (6), its characterized in that: still including rotating copper sheet (7), spring leaf (8) one end is connected with movable contact extraction terminal (6) cooperation, and the spring leaf (8) other end is connected with connection piece (9) cooperation, rotates copper sheet (7) one end and movable contact extraction terminal (6) cooperation and is connected, rotates copper sheet (7) other end and connection piece (9) cooperation and is connected, and push switch (10) one end is used in connection piece (9) to make push switch (10), connection piece (9), rotate copper sheet (7), spring leaf (8), movable contact extraction terminal (6) form the drive mechanism of movable contact (5) and stationary contact separation or contact.

2. The microswitch as in claim 1 wherein: the end face of the stationary contact and/or the movable contact (5) is provided with a metal layer.

3. The microswitch as in claim 2 wherein: the metal layer is a silver alloy layer.

4. The microswitch as in claim 2 wherein: the thickness of the metal layer is 0.3 mm-0.35 mm.

5. The microswitch as in claim 1 wherein: the movable contact leading-out terminal (6) is provided with an inserting hole (6.1), and a bolt at one end of the rotary copper sheet (7) is inserted into the inserting hole (6.1).

6. The microswitch as in claim 1 wherein: the connecting piece (9) is provided with a slot position (9.1), the other end of the rotary copper sheet (7) is provided with a clamping slot position (7.1), and the clamping slot position (7.1) is clamped on the slot position (9.1).

7. The microswitch as in claim 1 wherein: slots are formed in the connecting sheet (9) and the movable contact leading-out terminal (6), a bolt at one end of the spring piece (8) is inserted into the slot of the connecting sheet (9), and a bolt at the other end of the spring piece (8) is inserted into the slot of the movable contact leading-out terminal (6).

8. The micro-switch according to any one of claims 1-7, wherein: the device comprises a shell (11), wherein a mounting position (12) for mounting a push switch (10) is arranged on the shell (11), a fixed contact is arranged on a fixed contact leading-out terminal, a first assembly limit groove (14) and a first fixing hole (13) are arranged on the shell (11), one end of the fixed contact leading-out terminal is inserted into the first fixing hole (13), a fixed contact leading-out terminal part is limited in the first assembly limit groove (14), and the other end of the fixed contact leading-out terminal extends out of the shell (11) along the first assembly limit groove (14); in addition, a silver layer which covers the surface of the movable contact leading-out terminal (6) and/or the fixed contact leading-out terminal and/or the connecting sheet (9) and/or the rotating copper sheet (7) is arranged on the movable contact leading-out terminal and/or the fixed contact leading-out terminal and/or the connecting sheet (7), and the thickness of the silver layer is 0.6-1 mu m.

9. The microswitch as in claim 8 wherein: the shell (11) is further provided with a second assembly limit groove (15) and a second fixing hole (16), one end of the movable contact lead-out terminal (6) is inserted into the second fixing hole (16), the movable contact lead-out terminal (6) is partially limited on the second assembly limit groove (15), and the other end of the movable contact lead-out terminal (6) extends out of the shell (11) along the second assembly limit groove (15).

10. The micro-switch according to any one of claims 1-7, wherein: the micro switch is a normally open micro switch, a normally closed micro switch or a normally open micro switch.